Overclocking
Overclocking on the ASRock Z370 Taichi was... well... a bit difficult at first. I had all sorts of issues finding a RAM kit that worked well for me, and when I did find one that seemed relatively OK, I did manage to get a decent overclock without any throttling, but wasn't very confident that the voltage adjustments I was making were actually working. It also helps to load a pre-defined OC profiles to prevent the CPU from throttling under load ;). Clearer voltage reporting in the OS might help with that.
Hardware-wise, there aren't a lot of features here for overclocking; however, I was happy to see that the highly critical POST code display some boards still lack is present on the ASRock Z370 Taichi.